(Click to see larger image) Keep your samples in line with Tritech Research's test tube racks! We have a variety of colors available for color-coding specific projects or identifying hazardous samples. The 80 Well Test Tube Racks are designed in a 16 x 5 configuration with each well numbered and two textured writing surfaces allowing convenient sample identification. Rack dimensions are 9"L x 2 - 1 / 16"D with a well diameter of 10.5mm. Made of polypropylene, the 80 Well Test Tube Racks are autoclavable, ideal for freezing, benchtop use, storage, and transporting samples.